<!DOCTYPE html>
<html>

<head>
    <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
    <link href="css/theme-classic-all.css" rel="stylesheet" />
    <script type="text/javascript" src="js/ext-all.js"></script>
    <script type="text/javascript">
        Ext.onReady(function() {
            Ext.create('Ext.panel.Panel', {

                title: 'Hello',

                width: 200,

                html: 'World!',

                renderTo: Ext.getBody()

            });
        });
    </script>
</head>

<body>

</body>

</html>